Secure email gateways: AI search visibility ranking (2026)
How AI search engines rank secure email gateways by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Email security platforms used to filter threats, block phishing, enforce policy, and protect inbound and outbound mail flows. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
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When evaluating secure email gateways, AI engines frequently highlight Proofpoint as the leader in the field, with a visibility percentage of 12.5%. Mimecast and Check Point Harmony Email are also commonly mentioned as top contenders. Proofpoint not only leads in visibility but also captures a 25% citation rate, signifying strong discussion presence among AI-driven platforms.
The rankings are heavily influenced by prevalent sources such as YouTube, Gartner, and Google, along with brand-specific websites like proofpoint.com and checkpoint.com. These platforms serve as both review aggregators and authoritative voices in the industry, guiding AI recommendations based on the depth and breadth of content available from these domains.
For those seeking to select a secure email gateway, understanding the weight placed by AI engines on recent reviews and third-party validation is crucial. Consider how frequently a brand garners attention from reliable sources and think about whether these sources have substantial topical authority in the specific subcategory of secure email gateways.
At a glance
What we observed in this category
Proofpoint leads the secure email gateways category with a composite score of 16.2, ahead of Mimecast at 12.5 and Check Point Harmony Email at 11.2. The gap matters because Proofpoint holds both the highest citation rate (25.0%) and matches peers on visibility (12.5%), while most brands score below 9.0. However, Proofpoint's visibility has fallen sharply from 50.0% to 12.5% in the current period, suggesting the category leader position is under pressure despite its citation advantage.
Check Point Harmony Email presents the sharpest divergence between visibility and citation in this dataset: it scores 0.0% on visibility yet 37.5% on citation, the highest citation rate of any brand audited. This means Google AI Mode references Check Point as a trusted source without naming it as a recommended product. Conversely, IRONSCALES, Abnormal Security, and Barracuda all score 12.5% on visibility but 0.0% on citation, showing the opposite pattern: named but not cited as evidence.
Every brand in the top 10 shows Google AI Mode as its top engine, indicating the audit data is entirely anchored on that single engine. Among the top cited sources in the category, gartner.com and youtube.com appear alongside proofpoint.com and checkpoint.com as direct brand domains, suggesting AI Mode draws heavily on analyst and video content. Reddit.com and pcmag.com also feature, pointing to community and review-type sources as supporting references for this category.
Movers & shakers since last refresh
Biggest visibility risers
-
IRONSCALES 0% → 12% · rank #4 → #4+12pp
-
Abnormal Security 0% → 12% · rank #9 → #5+12pp
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Barracuda 0% → 12% · rank #19 → #6+12pp
Biggest visibility fallers
-
Proofpoint 50% → 12% · rank #1 → #1-38pp
-
Mimecast 38% → 12% · rank #2 → #2-25pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
proofpoint.com
|
12% | 25% | Google AI Mode |
Proofpoint leads with a composite score of 16.2 and the highest citation rate at 25.0%, but its visibility has dropped 37.5 points from the prior period. |
||||
| 2 |
mimecast.com
|
12% | 12% | Google AI Mode |
Mimecast matches Proofpoint on visibility at 12.5% but its citation rate of 12.5% is half of Proofpoint's, producing a composite score of 12.5 versus 16.2. |
||||
| 3 |
checkpoint.com
|
0% | 38% | Google AI Mode |
Check Point Harmony Email has zero visibility yet the highest citation rate in the category at 37.5%, making it the most cited but least named brand in AI responses. |
||||
| 4 |
ironscales.com
|
12% | 0% | Google AI Mode |
IRONSCALES gained 12.5 visibility points this period but lost 12.5 citation points simultaneously, scoring 12.5% visibility and 0.0% citation at a composite of 8.8. |
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| 5 |
abnormalsecurity.com
|
12% | 0% | Google AI Mode |
Abnormal Security rose four rank positions to fifth, gaining 12.5 visibility points with no citation presence, matching IRONSCALES and Barracuda on a composite score of 8.8. |
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| 6 |
barracuda.com
|
12% | 0% | Google AI Mode |
| 7 |
material.security
|
0% | 12% | Google AI Mode |
| 8 |
trustifi.com
|
0% | 12% | Google AI Mode |
| 9 |
cloudflare.com
|
0% | 12% | Google AI Mode |
| 10 |
cisco.com
|
0% | 12% | Google AI Mode |
| 11 |
trendmicro.com
|
0% | 0% | Google AI Mode |
| 12 |
sophos.com
|
0% | 0% | Google AI Mode |
| 13 |
broadcom.com
|
0% | 0% | Google AI Mode |
| 14 |
mailinblack.com
|
0% | 0% | Google AI Mode |
| 15 |
tessian.com
|
0% | 0% | Google AI Mode |
| 16 |
spamtitan.com
|
0% | 0% | Google AI Mode |
| 17 |
n-able.com
|
0% | 0% | Google AI Mode |
| 18 |
egress.com
|
0% | 0% | Google AI Mode |
| 19 |
microsoft.com
|
0% | 0% | Google AI Mode |
| 20 |
fortinet.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on secure email gateways, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →
Rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically. How AI search ranking works →
Get your own secure email gateways brand audited
The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about secure email gateways AI visibility
Who leads AI visibility in secure email gateways?
Proofpoint leads with a composite score of 16.2, driven by a citation rate of 25.0% and a visibility rate of 12.5%, both above the category averages of 6.2% and 3.1% respectively.
Which brand has the highest citation rate in this category despite low visibility?
Check Point Harmony Email holds a 37.5% citation rate, the highest in the dataset, while recording 0.0% visibility, meaning Google AI Mode uses its content as a source without surfacing it as a named recommendation.
What sources does AI cite most for secure email gateway research?
The top cited sources include youtube.com, gartner.com, google.com, proofpoint.com, checkpoint.com, reddit.com, pcmag.com, and abusix.com, spanning analyst, video, community, and review content.
Which brands are rising fastest in AI visibility for secure email gateways?
Barracuda made the largest rank jump, moving from rank 19 to rank 6 with a visibility delta of plus 12.5 points, while Abnormal Security rose four positions from rank 9 to rank 5 over the same period.
Is there a meaningful gap between being named and being cited in this category?
Yes, four brands including IRONSCALES, Abnormal Security, and Barracuda each show 12.5% visibility but 0.0% citation, while Check Point shows the reverse, confirming that naming and citing are distinct behaviours in Google AI Mode responses.
Which engine dominates AI visibility for secure email gateways?
Google AI Mode is the top engine for every brand in the top 10, meaning the entire visible AI surface for this category currently originates from a single engine.